Feeding mechanism for sewing-machines.



, R. G. wooowmz'o.

' FEEDING MECHANISMJ'OR SEWING MACHINES.

APPLICATION FILED APRJM I914.

- Patented Apr. 16, 191$ 2 SHEETS-SHEET I.

,1 0 2. I r: i 3

a, r O

W 6 I I I l I i 7 Suva-dot wt My WW4,

R. G. WOODWARD. FEEDING MECHANISM FOR SEWING MACHINES.

\ w APPLICATION FILED APR. 4.19l4- 1,263,184. Patented Apr. 16,1918.

2 SHEETS-SHEEI' 2.

Chimney 3 a citizen of the United States, residing at UNITED sTA'rEsrATnNT oFF oE.

RUSSEL e. WOOZDWARD, or WAUKEGAN, ILLINOIS, ASSIGNOR 'ro UNION SPECIAL MACHINE COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or IL INOIS.

Specification of Letters Patent. I

FEEDING MECHANISM FOR SEWING-MACHINES.

Original application filed August 6, 1909, Serial No. 511,596. Divided and this application filed April 4, 1914. Serial No.829,498.

To all whom it may concern:

Be it known that I, RUssEL G. WOODWARD,

Waukegan, in the county of Lake, State'of Illinois, have invented certainnew and useful Improvements in Feeding Mechanism for Sewing-Machines, of which the following is a-description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

My invention relates to new and useful improvements in sewing machines and more especially to a feeding mechanism having an auxiliary part engaging, the material in advance of and at one side of the stitching point, combined with a presser foot of special construction to 'coiiperate with such particular type of feeding mechanism.

The invention is illustrated'in the accompanying drawings, in which- 7 Figure 1 is a front elevation of a machine embodying the invention;

Fig. 2,is a top plan view with the work plate removed, showing in dotted lines the position of the presser foot;

Fig. 3 is a side view of the presser foot, showing in detail the position of the auxiliary part of the feeding dog, relative to the presser foot;

Fig. 4 1s a sectlonal viewshowing the vertical yielding part of the presser foot;

Fig. 5 1S atop plan view of the presser.

Fig. 6 a bottom view of the same;

.Fig. 7 a section centrally through the presser foot; and

Fig. 8 a section, showing the vertical i yielding and oscillating part.

In these drawings, the sewing machine illustrated comprises a bed plate 1, having an overhanging arm 2, on which is mounted a needle lever 3, oscillated by a link 1, from the main shaft. The needle bar 5, carrying in the present embodiment three needles 6, is reciprocated from the needle lever 3. A looper 7 beneath the work support 8 coiiperates with all three needles. Thread laying fingers 9. and 10 are herein shown operating to lay a thread back and forth in front of the-needles so that the thread will be stitched to the fabric.

The feeding mechanism shown includes afeed bar 11, carrying a main feed dog 12, said feed bar being reciprocated back and On the Other side forth by means of a link 13 connected to a crank on the end of the main shaft'14. A main'feed bar carries an auxiliary feed dog 15, which moves back and forth with the main feed bar 11 and is given a differential movement from the main Shaft 14. The auxiliary feed dog is located on one side of and in advance of the stitching mechanism. The presser foot, which is designed espe- Patented Apr. 16, 1918.

cially to coeperate with this feeding mechanism, consists of the shank 16 secured to the lower end of the usual presser bar, which is yieldingly held depressed and which may be raised when desired by means of the usual cam lever or knee shift;

The shank of the presser foot 16 carries a rigid central portion 17 (see Fig. 7). Said central portion is cut away as at 18 to form the needle slot. Fingers 19 project into the needle slot 18 and serve in the usual way as a: means-over which the thread may be laid by the thread-laying fingers 9 and 10. The presser foot is provided on one side with an auxiliary part 20. The shank of the presser foot 16 is slotted to receive an upwardly projecting part 21, formed rigidly with the auxiliary part 20. A post 22 is rigidly mounted on the part 21, and slides in a suitable opening in the shank. The part 21 is cut away at 23, and a pin 24 carried by the shank 16 extends through the opening 23, and serves to limit the downward movement of the auxiliary part 20.

The auxiliary part-2O is yieldingly pressed downwardly by a spring 25,-whichbears on the upper end of the post 22. The spring 25 is secured to the presser foot by means of a screw 26. of the main portion 17 of the presser foot is an auxiliary presser part 27. Said presser part 27 fits in a slot formed in the shank 16, and carries an upwardly projecting post 28, which extends.

through the opening 29 formed in the shank 16. The post 28 is of slightly smaller diameter than the width of the opening 29, so that said post can rock or tilt slightly in the opening.

The auxiliary part 27 also has an opening 30 which receives a stop pin 31, earned by I the Shank 16 of the,presser foot. This opening 31 Serves tolimit the downward movement of the auxiliary part 27 A Spring 32 which may be secured by the screw 26, ex-

tends forward of the shank 16 of the presser foot, and bears upon the upper surface of the auxiliary part 27 as" shown in Figs. 3

and 5.

, 27, the whole part ;will move bodily vertically against the tension of the spring 32.

If pressure is brought against the forward. end of the'auxiliary foot 27, it will raise the forward end. The post 28 will tilt in the slot 29, and the slot 30 will allow the auxiliary part 27 to swing about an axis. My improved foot is so located relative to the feeding mechanism herein shown, that the auxiliary part 27 extends over and cooperates with the auxiliary feed dog 15, while the main part of the presser foot and the auxilifary part 20 will cooperate with the main eed.

Both the auxiliary parts 20 and 27 extend slightly beneath the lower surface of the main portion 17, (see Fig. 7). The purpose of this is to allow the auxiliary parts to have an independent downward yielding movement, so that they can move below the lower surface of the main foot and properly guide and direct the fabric to the stitching mecha- IllSIIl.

The threads which are led back and forth in front of the stitching mechanism are engaged solely by the main part of the presser foot.

I do not herein claim the special construction of presser foot except in combination with the feeding mechanism above described, as the presser foot per 86 forms the subject matter of my application filed August 6th, 1909, SerialNo. 511,596, patented Nov. 2%, 1914, No. 1,118,092, of which this application is a division.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. The combination with stitch forming mechanism, of a feeding mechanism having a 1,263,1t34t a main feed dog and an auxiliary feed dog engaging the material at one side of and in advance of the stitching point, a presser foot having a main portion and a yielding por tion, said yielding portion being mounted and constructed so as to move bodily to position the work-engaging surface thereof be low the work-engaging surface of the main portion, said yielding portion being disposed go as to cooperate with said auxiliary feed 2. The combination with stitch forming mechanism, of a feeding mechanism having a main feed dog and an auxiliary feed dog engaging the material at one side of and in advance of the stitching point, a presser foot having a main portion and a pivoted portion constructed to move bodily to position the work-engaging surface thereof below the till work-engaging surface of the main portion,

said pivoted portion being disposed so as to cooperate with said auxiliary feed dog, and a stop pin for limiting the downward movement of the pivoted portion.

3. The combination of a stitch forming mechanism, of a feeding mechanism having a main feed do and an auxiliary feed dog, said auxiliary eed dog engaging the material at one side of and in advance of the stitching point and a presser foot having a main portion, an auxiliary portion located at one side of the main portion, means for supporting said auxiliary portion so that it may yield vertically bodily to carry the work-engaging surface of said auxiliary ortion from a point above the work engagmg surface of the main portion to a point below the same, a second auxiliary portion located at the other side of said main portion and cooperating with said auxiliary feed dog, and means for supporting said second auxiliary portion so that it may yield vertically bodily to carry the work-engaging surface of said second auxiliary portion from a point above the work engaging surface of the main portion to a point below the same, said means for supporting said second auxiliary portion being so constructed that said second auxiliary portion may oscillate about a point intermediate its ends.

in testimony whereof, I afiix my signature in the presence of two witnesses RUSS L G. WUODWARD, Witnesses:

S. Gnoraen TATE, A. l Brannsrrarm. 

